<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .box{
            width: 1000px;
            height: 510px;
            background-color: rgb(218, 73, 73)175, 43, 43);
            margin: auto;
        }
        .left{
            width: 160px;
            height: 510px;
            background-color: rgb(0, 204, 255);
            float: left;

        }
        .b1{
            width: 840px;
            height: 510px;
            background-color: rgb(9, 255, 0)163, 66, 66);
            float:right;
        }
        .b1>div{
            width: 170px;
            height: 250px;
            background-color: rgb(255, 145, 0);
            float: left;
            margin-left: 10px;
            margin-bottom: 10px;
        }
    </style>
</head>
<body>
    <div class="box">
        <div class="left">
        </div>
        <div class="b1">
            <div></div>
            <div></div>
            <div></div>
            <div></div>
            <div></div>
            <div></div>
            <div></div>
            <div></div>
        </div>
    </div>
</body>
</html>